Soot cleaning



A. C. HUTT.

800T CLEANING APPLIANCE FORNBOILERS. APPLICATION FILED MAR. 25. 1919.

Patented Sept. 9, 1919. I

2 SHEETSSHEET I.

A. C. HUTT.

800T CLEANING APPLIANCE FOR BOILERS. APPLICATION FILED MAR. 25, I9I9.

1,315,839. I Patented Sept. 9, 1919.

2 SHEETS-SHEET 2.

ARTHUR'GYRIL HUTT, OF WALLINGTON, ENGLAND.

SOOT-GLEANING APPLIANCE FOR BOILERS.

Specification of Letters Patent.

Patented Sept. 9, 1919.

Application filed March 25, 1919; Serial No. 284,992.

To all whom it may 0011mm:

Be it known that I, ARTHUR CYRIL Herr, a subject of the King of theUnited Kingdom of Great Britain and Ireland, and residing at\Vallington, Surrey, England, have invented a certain new and usefulImprovement in Soot-Cleaning Appliances for Boilers, of which thefollowing isa specification.

This invention relates to soot cleaningappliances for boilers whether ofthe marine or of the land type.

As a means of disposing of the soot, according to the invention there isutilized the suction of an ejector; where an ash ejector is fitted, asin ships, suction therefrom may be utilized to discharge the sootoverboard.

A practical application according to this invention includes a system ofpipes and permanent fittings on the soot casings, flues, smoke boxes anduptakes of boilers, whereby the soot may readily be removed by suction,Whether or not the boiler is steaming.

For marine boilers the vacuum may be obtained from the usual ashejector, in which event the soot is discharged overboard through theusual ash ejector pipes.

In the accompanying drawings Figure 1 is a plan illustratingdiagrammatically a battery of boilers equipped with soot-clean ingapparatus according to the invention. Figs. 2, 3, 4 and 5 illustratedetails. Figs. 6 and 7 show alternative arrangements.

As shown, a main soot suction pipe 1leading from the ash ejector 2extends between the backs of the boilers. Near the ash ejector 2 arefitted a shut-off valve 3' and a flap check valve 3; the flap valveallows for the escape of water, so that the pipe 1 and soot casingscannot be flooded in the event of a heavy sea coming down the overboarddischarge pipe when the soot cleaning apparatus is in use and the valve3 is open.

In the main pipe 1, behind the boilers, are fitted valve boxes 1 whichare fitted with valves (operable by spindles 1' from the front of theboilers) from which main pipe 1 branch-pipes 5 are led through the backsoot casing, through the soot casing 6, to the outside of the front sootcasing, there being fitted at the end of each pipe a cap having atesting orifice 6, which also allows a small quantity of air to passthrough the pipe and keep it cool when not in use.

The pipe section within each casing is :formed with perforations 7 atintervals. Fitted in each soot casing is a sliding rod or pipe 8 fittedwith scrapers 9 and having a handle 10 at the front of the boilerwhereby the soot is moved to and fro past the perforations 7 and sosucked out; the scrapers also serving the purpose of keeping theperforations clear in the event of clinker blocking the same. Thescrapers may be fitted to a solid operating rod, or a tubular rod toallow a small quantity of air to pass through to keep it cool.

Alternatively, the suction pipe formed with perforations may slide inthe casing, as shown in Fig. 5. The suction pipe 5 slides in the sootcasing and valve box 4 and when it is pushed back to the valve seating13 suction is shut oil' the sliding tube; when it is pulled forward, thesliding tube is open to the main suction pipe 5. Scrapers 12 are fittedin the soot casing for the purpose of keeping the perforations clear inthe event of clinker blocking the same.

Fittings may be provided on the main pipe 1 and valve oxes 4 forcleaning the uptakes, tubes and other parts of the boiler; thesefittings having connections 11 for taking flexible hose provided withsuitable nozzles for clearing.

Fig. 7 shows an arrangement as fitted to a Lancashire boiler. Suctiontubes 5 are situated in the fines 6 from front to back of the boilers.The main pipe 1 may run along the front or back of the boilers as mostconvenient. Scrapers 9 are provided for each suction tube.

Fig. 6 shows an arrangement as fitted to a Scotch boiler, (return tubeboiler). Suction tubes are situated in the bottom of the smoke boxcasings 6 and are connected by branch pipes 5 to the main suction pipe 1running below the floorplates. Each suction pipe has a correspondingscraper 9.

In this specification the term soot is in tended to comprise fine ash,clinker and all fine dust and solid matter carried by draft from thefire toward the chimney or furnace.

What I claim is 1. A soot cleaning apparatus for boilers comprising thecombination with a suction ash ejector and soot casings for the boilers,of perforated pipes mounted in said soot casings, and external scrapersfor keeping said perforations open, said perforated pipes and scrapersbeing relatively movable, and a piping system connecting said perforatedpipes with said ejector.

2. A soot cleanin apparatus for boilers comprising the com ination witha suction ash ejector and soot casings for the-boilers, of perforatedpipes mounted in said soot casings, external scrapers encircling saidpipes, sliding rods to which said scrapers are fitted and which rods areprovided with operating handles, and a piping system con.- necting saidperforated pipes with said ejector.

3. A soot cleanin apparatus for boilers comprising the combination witha suction ash ejector and soot casings for the boilers, of perforatedpipes mounted in said soot casings and external scrapers for keeping:Copies of this patent may be obtained for said perforations open, saidperforated pipes and scrapers being relatively movable,

and a piping system connecting said perforated pipes with said ejector,said piping system having a shut-off valve and a flap or check valvewhich will prevent said piping system from being flooded when saidshutoii valve is open.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ARTHUR OYRIL HUTT.

Witnesses:

KATE FOTHERINGHAM, ISABEL RoLLo.

five cents each, by addressing the Commissioner of Iatents, Washington,Ill.

